Source: screenrant.com

3. The Phoenix Force

See, the X-Men movies may be back under the Disney umbrella (due to a horrifying and terrible merger that should scare all of you) but odds are the Dark Phoenix will never see the light of the Marvel Cinematic Universe.

Part of that is brand confusion. The Dark Phoenix movie is (in theory) coming out and transplanting characters from one cinematic universe to another doesn't really happen that fast unless their huge IP like Spider-Man. Plus, that movie might never actually come out. But the Phoenix Force is crazy powerful.

It showing up anywhere is the kind of event that makes the rest of the galaxy sit up and take notice. It has historically both possessed and replaced people depending on its needs and exhibits varying degrees of sentience. But just imagine Captain America, roaring into battle against Thanos while dressed as a giant firebird and trailing heat behind him.

Ugh, that sounds rad.